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<p class="level0"><a name="NAME"></a><h2 class="nroffsh">NAME</h2>
<p class="level0">CURLOPT_HEADEROPT - set how to send HTTP headers <a name="SYNOPSIS"></a><h2 class="nroffsh">SYNOPSIS</h2>
<p class="level0">&#35;include &lt;curl/curl.h&gt; 
<p class="level0">CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HEADEROPT, long bitmask); <a name="DESCRIPTION"></a><h2 class="nroffsh">DESCRIPTION</h2>
<p class="level0">Pass a long that is a bitmask of options of how to deal with headers. The two mutually exclusive options are: 
<p class="level0"><span Class="bold">CURLHEADER_UNIFIED</span> - the headers specified in <a Class="emphasis" href="./CURLOPT_HTTPHEADER.html">CURLOPT_HTTPHEADER</a> will be used in requests both to servers and proxies. With this option enabled, <a Class="emphasis" href="./CURLOPT_PROXYHEADER.html">CURLOPT_PROXYHEADER</a> will not have any effect. 
<p class="level0"><span Class="bold">CURLHEADER_SEPARATE</span> - makes <a Class="emphasis" href="./CURLOPT_HTTPHEADER.html">CURLOPT_HTTPHEADER</a> headers only get sent to a server and not to a proxy. Proxy headers must be set with <a Class="emphasis" href="./CURLOPT_PROXYHEADER.html">CURLOPT_PROXYHEADER</a> to get used. Note that if a non-CONNECT request is sent to a proxy, libcurl will send both server headers and proxy headers. When doing CONNECT, libcurl will send <a Class="emphasis" href="./CURLOPT_PROXYHEADER.html">CURLOPT_PROXYHEADER</a> headers only to the proxy and then <a Class="emphasis" href="./CURLOPT_HTTPHEADER.html">CURLOPT_HTTPHEADER</a> headers only to the server. <a name="DEFAULT"></a><h2 class="nroffsh">DEFAULT</h2>
<p class="level0">CURLHEADER_SEPARATE (changed in 7.42.1, ased CURLHEADER_UNIFIED before then) <a name="PROTOCOLS"></a><h2 class="nroffsh">PROTOCOLS</h2>
<p class="level0">HTTP <a name="EXAMPLE"></a><h2 class="nroffsh">EXAMPLE</h2>
<p class="level0">TODO <a name="AVAILABILITY"></a><h2 class="nroffsh">AVAILABILITY</h2>
<p class="level0">Added in 7.37.0 <a name="RETURN"></a><h2 class="nroffsh">RETURN VALUE</h2>
<p class="level0">Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. <a name="SEE"></a><h2 class="nroffsh">SEE ALSO</h2>
<p class="level0"><a Class="manpage" href="./CURLOPT_HTTPHEADER.html">CURLOPT_HTTPHEADER</a>, <a Class="manpage" href="./CURLOPT_PROXYHEADER.html">CURLOPT_PROXYHEADER</a><p class="roffit">
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